Cleanup: README.md contains leftover scratch text "no-op documentation tweak"

[kevinelliott]

Summary

The published README.md opens with a stray paragraph that looks like leftover scratch text from a workflow-verification PR, sitting awkwardly between the "Node.js Support Policy" section and the actual project header:

# @airframes/acars-decoder

This is a no-op documentation tweak to verify repository access, build/lint, tests, and PR workflow. No functional code changes are included.

# acars-decoder-typescript

This is the README that ships on the package's npm and GitHub pages, so it's reader-facing. The two competing top-level headers (# @airframes/acars-decoder and # acars-decoder-typescript) also make the document structure confusing.

Suggested fix

• Delete the "no-op documentation tweak" sentence and the duplicate # @airframes/acars-decoder heading.
• Optionally move the "Node.js Support Policy" section below the project header / badges so the README opens with the project name.